package com.wtgroup.demo.mianshi.容器.map;

import java.util.HashMap;

/**
 * @author dafei
 * @version 0.1
 * @date 2021/4/14 18:37
 */
public class D004_HashMap {

    public static void main(String[] args) {

        HashMap<Object, Object> map = new HashMap<>();
        map.put("1", "xxx");
        map.put("2", "yyy");
        Object o = map.get("1");
        System.out.println(o);

        map.remove("2");
    }

}
